EP 0595514 B1 20030625 - Piezoelectric transducer
Title (en)
Piezoelectric transducer
Title (de)
Piezoelektrischer Wandler
Title (fr)
Transducteur piézo-électrique
Publication
Application
Priority
- JP 8035792 U 19921027
- JP 8313892 U 19921106
- JP 8430392 U 19921111
Abstract (en)
[origin: EP0595514A2] The case has an opening and a wall section with a hole provided on the wall section and the wall section forms an inner space. The case also has a recessed area surrounding the hole. The piezoelectric diaphragm is supported around its periphery on top of the case so that an enclosure, including the hole, is formed within the inner space. An acoustic resistance sheet is bonded on to the wall section with the adhesive that is filled into the recessed area to close off the hole. With this structure, defective damping caused by seeping of the adhesive is prevented. <IMAGE>
IPC 1-7
IPC 8 full level
H04M 1/03 (2006.01); H04R 17/00 (2006.01); H04R 1/22 (2006.01)
CPC (source: EP US)
H04M 1/03 (2013.01 - EP US); H04R 17/00 (2013.01 - EP US); H04R 1/222 (2013.01 - EP US); H04R 1/225 (2013.01 - EP US)
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
EP 0595514 A2 19940504; EP 0595514 A3 19961009; EP 0595514 B1 20030625; CN 1037396 C 19980211; CN 1086368 A 19940504; DE 69333058 D1 20030731; DE 69333058 T2 20031224; MY 112868 A 20011031; US 5371428 A 19941206
DOCDB simple family (application)
EP 93308246 A 19931015; CN 93118580 A 19931022; DE 69333058 T 19931015; MY PI19932179 A 19931021; US 13931093 A 19931019